JPH04165843A - Communication controller - Google Patents

Abstract

PURPOSE:To reduce conventional man-hour to connect plural cables with manual work by providing a storage part storing the control information of a connection between a line control part and a line adapter(LA), and a line terminating circuit recognizing connection information from the storage part and switching the connection between the LA and a line control part. CONSTITUTION:This device is constructed by a buffer memory 1, a line terminating circuit 3 storing line adapters LA 4, 5 and 6, and a line control part 2 controlling the buffer memory 1, the line terminating circuit 3 and the whole device by a bus 10 and a signal 11. The buffer memory 1 stores the control information for the construction and the connection of transmitting data/ receiving data, the addresses of the LA 4, 5 and 6, and the like. The line terminating circuit 3 is equipped with a line changeover parts 21 and 22, and drivers 23-28. The construction of the LA 4, 5 and 6 and the information of the addresses of the LA 4, 5 and 6 stored in advance are read out from the buffer memory 1 through a signal line 18 by a recognition part 20. The recognition part 20 switches the connection of the LA 4, 5 and 6 from the read information by the line changeover parts 21 and 22.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication control device, and particularly to a communication control device accommodating a plurality of line adapters.

[Conventional technology]

Conventionally, this type of communication control device has multiple line adapters (
A cable is used to connect to a line control unit for controlling the LA (hereinafter referred to as LA), and when changing the refinement of the LA, the cable connection is manually changed.

[Problem to be solved by the invention]

The conventional communication control device described above uses a cable to connect to a line control unit to control multiple LAs, and
When changing the LA refinement, the cables must be manually reconnected each time, which has the disadvantage of requiring a lot of manual labor.

[Means to solve the problem]

A communication control device of the present invention is a communication control device that accommodates a plurality of line adapters, and includes a storage unit that stores connection information for connecting a line control unit and the plurality of line adapters in advance, and a line termination circuit. The line termination circuit comprises:
a recognition unit that reads and recognizes the connection information of the plurality of line adapters from the storage unit; and a connection switching unit that switches connections between the line control unit and the plurality of adapters according to instructions from the recognition unit. have.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

In FIG. 1, this embodiment includes a buffer memory 1, a line termination circuit 3 accommodating line adapters (hereinafter referred to as LA) 4, 5, 6, a bus 10 and a signal 11, The system includes a line control section 2 that controls the entire embodiment.

Buffer memory 1 stores transmit data/receive data and LA
4, 5.6 A memory that stores control information for configuration and connection such as addresses.

The line control unit 2 connects the signal lines 15 to 15 through the line termination circuit 3.
Controls data transfer by interrupt processing from 17.

The line termination circuit 3 controls the connection between the line control section 1 and the LAs 4 and 5.6.

The LAs 4 to 6 control transmission control procedures and notify the line control unit 2 of processing requests via the line termination circuit 3.

FIG. 2 is a block diagram showing an example of the line termination circuit in FIG. 1.

In FIG. 2, the line termination circuit 3 includes a recognition section 20, line switching sections 21, 22, and drivers 23-28.

The recognition unit 20 recognizes the configuration of LA4°5.6 from the buffer memory 1 and the address information of LA4, 5.6, and issues an instruction to the line switching unit 21.22.

Further, the drivers 23 to 28 are switched depending on the state at the time of transmission and reception.

The line switching units 21 and 22 switch the connection of the LA to which the transmission processing request has been accepted.

The drivers 23 to 25 are enabled when in the transmitting state, and have high impedance when in the receiving state. Further, the drivers 26 to 28 have high impedance when in the transmitting state, and are enabled when in the receiving state.

Next, the operation of this embodiment will be explained using FIG. 1 and FIG. 2 together.

Pre-stored configuration of LA4, 5.6 and LA4, 5
．． The information at address 6 is transferred from buffer memory 1 to signal line 1.
8 and is read by the recognition unit 2o. Recognition unit 20
The line switching units 21 and 22 select LA from the read information.
4. Switch the connections in 5.6.

Next, the operation at the time of transmission in this embodiment will be explained using a processing request from the LA 6 as an example. First, the recognition unit 20 switches the line switching units 21 and 22 from LA to LA based on information from the buffer memory 1.
Switch to direction 6. Then, enable the driver 25, switch the driver 28 to high impedance,
Signal line 11° line switching section 21. Signal line 30. Line switching section 22° signal line 31. Driver 25. signal! 14. Data is transferred in the order of line adapter 6 and sent to line 17.

Next, the operation of the received signal in this embodiment will be explained using a processing request from LA4 as an example. The recognition unit 20 switches the driver 23 to high impedance and the driver 26 to enable based on the information from the buffer memory 1, and switches LA4 to
．． Signal line 12. Driver 26. Data from the signal lines 15 is transferred in the order of the signal lines 11.

〔Effect of the invention〕

As explained above, the present invention includes a storage unit that stores control information for connection between a line control unit and an LA, and a line that recognizes connection information from the storage unit and switches the connection between the LA and the line control unit. By having a termination circuit, it is possible to reduce the number of man-hours required for manually connecting a plurality of cables as in the conventional method.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of the line termination circuit in FIG. 1... Buffer memory, 2... Line control section, 3...
・Line termination circuit, 4 to 6...Line adapter (LA),
10...Bus, 11-18...Signal line, 20...
Recognition unit, 21-22... Line switching unit, 23-28...
・Driver, 30-31...Signal line, 40-43...
·Signal line.

Claims (1)

[Claims] In a communication control device that accommodates multiple line adapters,
A storage section that stores in advance connection information for connecting between a line control section and the plurality of line adapters, and a line termination circuit, wherein the line termination circuit connects the connection information of the plurality of line adapters from the storage section to the connection information of the plurality of line adapters. A communication control device comprising: a recognition unit that reads and recognizes connection information; and a connection switching unit that switches connections between the line control unit and the plurality of adapters based on instructions from the recognition unit.